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LM4871

更新时间： 2024-01-27 15:19:01
品牌 Logo 应用领域
德州仪器 - TI 放大器功率放大器
页数 文件大小 规格书
23页 1234K
描述
3W Audio Power Amplifier with Shutdown Mode

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LM4871 技术参数

是否Rohs认证： 符合生命周期：Obsolete
包装说明：DIP,Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.33.00.01
风险等级：5.82标称带宽：20 kHz
商用集成电路类型：AUDIO AMPLIFIER谐波失真：10%
JESD-30 代码：R-PDIP-T8JESD-609代码：e3
长度：9.817 mm湿度敏感等级：1
信道数量：1功能数量：1
端子数量：8最高工作温度：85 °C
最低工作温度：-40 °C标称输出功率：1.5 W
封装主体材料：PLASTIC/EPOXY封装代码：DIP
封装形状：RECTANGULAR封装形式：IN-LINE
峰值回流温度（摄氏度）：260认证状态：Not Qualified
座面最大高度：5.08 mm最大压摆率：10 mA
最大供电电压 (Vsup)：5.5 V最小供电电压 (Vsup)：2 V
表面贴装：NO温度等级：INDUSTRIAL
端子面层：TIN端子形式：THROUGH-HOLE
端子节距：2.54 mm端子位置：DUAL
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：7.62 mm

LM4871 数据手册

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LM4871  
www.ti.com  
SNAS002F –FEBRUARY 2000–REVISED MAY 2013  
LM4871  
3W Audio Power Amplifier with Shutdown Mode  
Check for Samples: LM4871  
1
FEATURES  
DESCRIPTION  
The LM4871 is a mono bridged audio power amplifier  
capable of delivering 3W of continuous average  
power into a 3Ω load with less than 10% THD when  
powered by a 5V power supply (see Note). To  
conserve power in portable applications, the  
LM4871's micropower shutdown mode (IQ = 0.6µA,  
typ) is activated when VDD is applied to the  
SHUTDOWN pin.  
2
•
No Output Coupling Capacitors, Bootstrap  
Capacitors, or Snubber Circuits Required  
•
•
•
•
Unity-gain Stable  
WSON, VSSOP, SOIC, or PDIP Packaging  
External Gain Configuration Capability  
Pin Compatible with the LM4861  
Boomer audio power amplifiers are designed  
specifically to provide high power, high fidelity audio  
output. They require few external components and  
operate on low supply voltages from 2.0V to 5.5V.  
Since the LM4871 does not require output coupling  
capacitors, bootstrap capacitors, or snubber  
networks, it is ideally suited for low-power portable  
systems that require minimum volume and weight.  
APPLICATIONS  
•
•
•
Portable Computers  
Desktop Computers  
Low Voltage Audio Systems  
KEY SPECIFICATIONS  
•
PO at 10% THD+N, 1kHz  
Additional LM4871 features include thermal shutdown  
protection, unity-gain stability, and external gain set.  
–
LM4871LD: 3Ω , 4Ω Loads; 3W (typ),  
2.5 W (typ)  
Note: An LM4871LD that has been properly mounted  
to a circuit board will deliver 3W into 3Ω (at 10%  
THD). The other package options for the LM4871 will  
deliver 1.5W into 8Ω (at 10% THD). See the  
Application Information section for further information  
concerning the LM4871LD, LM4871MM, LM4871M,  
and the LM4871N.  
–
All other LM4871 Packages: 8Ω load  
1.5 W (typ)  
•
•
•
Shutdown Current 0.6µA (typ)  
Supply Voltage Range 2.0V to 5.5 V  
THD at 1kHz at 1W Continuous Average  
Output Power into 8Ω 0.5% (max)  
Connection Diagrams  
Figure 1. VSSOP, Small Outline, and PDIP  
Figure 2. WSON Package (Top View)  
See Package Number NGN0008A  
Package  
Top View  
See Package Number DGK0008A, D0008A, or  
D0008E  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
All trademarks are the property of their respective owners.  
2
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2000–2013, Texas Instruments Incorporated  
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